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  Soyuz T-15 mission to Mir and Salyut 7 (1986)

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Author Topic:   Soyuz T-15 mission to Mir and Salyut 7 (1986)
LM-12
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Posts: 1058
From: Ontario, Canada
Registered: Oct 2010

posted 03-13-2014 11:43 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
The Soyuz T-15 mission to both the MIR and Salyut 7 space stations launched on this date in 1986.

Cosmonauts Leonid Kizim and Vladimir Solovyov launched to MIR on March 13. They transferred to Salyut 7 on May 5, where they conducted two EVAs on May 28 and 31. Then they returned to MIR on June 25. The Soyuz T-15 spacecraft landed on July 16.

A pretty impressive mission. How far apart were the MIR and Salyut 7 space stations? Were they at the same inclination?

Kizim and Solovyov (with Oleg Atkov) had also spent about eight months onboard Salyut 7 on an earlier mission in 1984.

Headshot
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Posts: 284
From: Streamwood, IL USA
Registered: Feb 2012

posted 03-14-2014 09:49 AM     Click Here to See the Profile for Headshot   Click Here to Email Headshot     Edit/Delete Message   Reply w/Quote
The two stations were about 3,000km (1860 miles) apart during the first transfer in early May. I do not have any info on their orbital inclinations. I believe the first transfer took 28 hours.

jasonelam
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Posts: 478
From: Monticello, KY USA
Registered: Mar 2007

posted 03-18-2014 07:45 PM     Click Here to See the Profile for jasonelam   Click Here to Email jasonelam     Edit/Delete Message   Reply w/Quote
All Salyut stations, Mir and ISS share the exact same orbital inclination: 51.6 degrees.

Jim Behling
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Posts: 655
From: Cape Canaveral, FL
Registered: Mar 2010

posted 03-18-2014 10:09 PM     Click Here to See the Profile for Jim Behling   Click Here to Email Jim Behling     Edit/Delete Message   Reply w/Quote
The stations would have to be at the same inclination; where as the Soyuz (and most LEO spacecraft) would not have the propulsive capability to change inclination (except for minor adjustments)

LM-12
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Posts: 1058
From: Ontario, Canada
Registered: Oct 2010

posted 03-19-2014 07:25 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
There is an interview with cosmonaut Solovyov about the Soyuz T-15 mission on the orbiter-forum.com website.

LM-12
Member

Posts: 1058
From: Ontario, Canada
Registered: Oct 2010

posted 03-21-2014 06:42 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Some excerpts from NASA RP 1357 Mir Hardware Heritage:

Mir launch time was set by the need to match planes with the Salyut 7/Cosmos 1686 complex for the planned transfer by Soyuz T-15 from Mir to the older station.

On May 4 Mir was lowered by 13 km to speed the approach to Salyut 7 and conserve Soyuz T-15's fuel supply for the transfer.

Soyuz T-15 separated from Mir when Salyut 7 was 2500 km away. The crossing required 29 hr.

Mir maneuvered twice June 24-25, raising its orbit slightly and moving closer to Salyut 7. On June 25 Soyuz T-15 undocked from Salyut 7 and began the 29-hr journey back to Mir.

All times are CT (US)

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